3 ms·
Those are some very neat "hybrid Fresnel" lenses. I'm curious how they're made (and at scale), as traditional polishing techniques wouldn't do the trick.
by netinstructions 11y ago
Those are some very neat "hybrid Fresnel" lenses. I'm curious how they're made (and at scale), as traditional polishing techniques wouldn't do the trick.
- tlmde 11y agoMolding, a number of plastics, with good optical properties, work in that regard.